Performance Analysis of Heat Pipe Heat Exchanger for Solar Hybrid Desiccant Air-Conditioning System

This paper reports the development of a novel solar hybrid desiccant cooling system with heat pipe heat exchanger (HPHE). The aim is to achieve higher efficiency to reduce the use of electricity by utilizing the desiccant dehumidification system to remove latent load, while the vapour-compression and heat pipe heat exchanger meet the sensible load. Novelty comes as the heat pipe heat exchanger in the system operates efficiently without external power. Experimental set-up has been built by combining the rotary desiccant wheel, heat pipe heat exchanger with a compressive cooling system. Tests are carried out at typical operative ranges for air-conditioning applications, specifically for high hot and humid locations in Bangi, Malaysia. Acetone is used as refrigerant in the HPHE. Performance of HPHE are tested and proven to have direct impact on Coefficient of performance (COP). The results shows good performance of heat pipe heat exchanger efficiency with average efficiency and capacity of 0.65 and 2kw respectively. It is found that the hybrid system can achieve a higher energy performance in hot humid regions.

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Analysis of Heat Pipe Heat Exchanger (HPHE) For Waste Heat Recovery from an Air Conditioning System

i-manager’s Journal on Future Engineering and Technology ◽

10.26634/jfet.2.3.831 ◽

2007 ◽

Vol 2 (3) ◽

pp. 86-95

Author(s):

R. Sudhakaran ◽

◽

V. Sella Durai ◽

T. Kannan ◽

P.S. Sivasakthievel ◽

...

Keyword(s):

Heat Exchanger ◽

Heat Pipe ◽

Air Conditioning ◽

Heat Recovery ◽

Waste Heat Recovery ◽

Waste Heat ◽

Air Conditioning System ◽

Pipe Heat

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A New Design of an Integrated Solar Absorption Cooling System Driven by an Evacuated Tube Collector: A Case Study for Baghdad, Iraq

Applied Sciences ◽

10.3390/app10103622 ◽

2020 ◽

Vol 10 (10) ◽

pp. 3622 ◽

Cited By ~ 1

Author(s):

Adil Al-Falahi ◽

Falah Alobaid ◽

Bernd Epple

Keyword(s):

Thermal Performance ◽

Air Conditioning ◽

Cooling System ◽

Electrical Power ◽

Energy Performance ◽

Coefficient Of Performance ◽

Solar Absorption ◽

Air Conditioning System ◽

Solar Fraction ◽

Design Variables

The electrical power consumption of refrigeration equipment leads to a significant influence on the supply network, especially on the hottest days during the cooling season (and this is besides the conventional electricity problem in Iraq). The aim of this work is to investigate the energy performance of a solar-driven air-conditioning system utilizing absorption technology under climate in Baghdad, Iraq. The solar fraction and the thermal performance of the solar air-conditioning system were analyzed for various months in the cooling season. It was found that the system operating in August shows the best monthly average solar fraction (of 59.4%) and coefficient of performance (COP) (of 0.52) due to the high solar potential in this month. Moreover, the seasonal integrated collector efficiency was 54%, providing a seasonal solar fraction of 58%, and the COP of the absorption chiller was 0.44, which was in limit, as reported in the literature for similar systems. A detailed parametric analysis was carried out to evaluate the thermal performance of the system and analyses, and the effect of design variables on the solar fraction of the system during the cooling season.

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